United States Department of Transportation
i
Hybrid Locomotive Waste Heat Recovery System (L-WHRS) Safety and Field Demonstration
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2022-07-11
[PDF-6.80 MB]
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Edition:September 27, 2018–December 31,2021
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Abstract:ThermaDynamics Rail LLC (TDR) developed the Locomotive-Waste Heat Recovery Systems (L-WHRS) formed by high-pressure heat exchangers coupled to a closed-loop Organic Rankine Cycle (ORC). The L-WHRS can be configured to be non-invasively retrofitted onto different types of locomotive engines to recover and convert locomotive waste thermal energy into conditioned, pollutant-free, electrical power. Under the sponsorship of the Federal Railroad Administration (FRA), TDR successfully completed a series of demonstration phases that increased the technology readiness level to a full-scale operational system. Full-scale L-WHRS testing involved static tests using simulator and dynamic over-the-road locomotive tests under various operational conditions. This report describes the design and testing of the L-WHRS electrical system configured to supply electric power to selected locomotive electrical loads and to an advanced Energy Storage System (ESS). These tests demonstrated feasibility to utilize the L-WHRS as an electric generator that can simultaneously supply power to the ESS and locomotive electrical loads.
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